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Part number 550-100-252/0520
– 10 –
Figure 7 Piping schematic — typical piping for multiple SVF
TM
boilers, using multiple boiler manifolds
Multiple boiler water piping (continued)
Legend — Figure 7
1 Flow/check valve (each boiler).
2 Isolation valves (when used).
3 Strainer (recommended one each boiler on return line).
4 Multiple boiler manifold (supply) — layout and size per
Figure 6, page 9.
5 Multiple boiler manifold (return) — layout and size per
Figure 6, page 9.
6 Primary pump.
7 Expansion tank (diaphragm type).
8 System air eliminator.
9 System automatic air vent.
10 Pressure reducing valve.
11 Check valve or backflow preventer, as required by applicable
codes
12 Isolation valve.
13 Cold water supply.
17 Boiler circulator (each boiler).
18 System supply.
19 System return.
20 Boiler relief valve and discharge piping, installed per
SVF
TM
Boiler Manual.
25 External drain/blowdown valve, when used, ¾” NPT or larger.
30 System supply and return immersion sensors, at least 6 pipe
diameters (but no more than 3 feet) from boiler connection
tees.
SVF
™
Series 1
COMMERCIAL CONDENSING GAS-FIRED WAT ER BOILER
— Advanced Manual
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